@Article{	  dgp95,
  author	= "Volker Diekert and Paul Gastin and Antoine Petit",
  title		= "Rational and recognizable complex trace languages",
  journal	= "Information and Computation",
  volume	= "116",
  pages		= "134--153",
  year		= "1995",
  doi		= "10.1006/inco.1995.1010"
}